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FWIW, I have repaired a couple of them, and also salvaged the "programming" from an otherwise unrepairable M535 module and transferred it to another good used one with an identical part number. No reprogramming was needed, other than to clear the fault codes that were stored in the module as it was failing. The data that you need is not in the processor, but rather stored in a separate IC. So in my experience, there is never a reason to have to replace everything.
This should be more than enough information for someone with a bit of an electronics background. Sorry, that is about all the info that I will share, as this kind of work is part of my business...
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'03 S, manual, 18" Carrera wheels, PSM, PSE, Litronic, 996 Cluster, +
Last edited by Qmulus; 09-19-2014 at 11:55 AM.
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